Andrew j



. emrah STATES rxrnurorrrcn NUT-MACHINE.

specification bf Letters Patent No. 26,446, dater; December iajisse.

and useful Improvements in Nut Machines;

and I do hereby declare that the following is a full, clear, and exact description of the construction and operation `of the same, reference being had to the annexed drawings,

making a part of this specification, in

which Figure I, is a front elevation of my improved machine. Fig. II, is a longitudinal section 'of the same taken at right angles to the frontelevation and passing through the center lines of the punches and nut box. Fig. III, is an elevation of machinery for forming hexagon nuts. Fig. IV, is a plan of nut box. Fig. V, is a modified and preferred `form of nut box. Fig. VI, is an end elevation of the stationary part of the nut box with the cutter attached. Fig. VII, is an end elevation of the movable part of the nut box with cutter attached. I Fig. VIII, is a longitudinal section of the round punch showing its conection with its stock and water pipe. Fig. IX, is a longitudinal sec# tion of the angular punch showing also its connection with its stock and water pipe.

Characters of like name and kind refer to like parts in each of the figures. F j

`The frame of the machine consists of two upright parts (A) upon which journal boxes (A) are supported. The bottoms of the upright parts (A) rest upon journal boxes (A2) similar to (A). These journal boxes in turn rest upon the bed plates (A3). F The whole is held together by the tension bars (A4). The journal boxes (A) are connected together by the crosshead (B) and the journal boxes (A2) by the crosshead (B). These crossheads act as guides to the punch stock or pistons C and C which move in apertures through them. To the lower punchstock (C.) an angular punch or cutter (D) is attached of the size and shape of the nut to be made, whether the `same be square hexagon or Octagon in form. F A cy-` lindrical hole is made extending through the .whole length of this angular punch (D) `and punch stocks C into which a movable punch, f, of the same size as the punch, c, or 0f the hole to'be made in the nut blank is placed. `A spiral spring (g) is coiled around the punch one end pressing against- "aF shoulder in the punch stock (C` `and the other resting on ashfoulder` on sa j F( p F as shown in Figs. I; andf`II.F` The object this punch is hereinafterfm reffull forth. l It `may befdispensed wi alt in which case the angular punehffis i shown in Fig. IX iasfhereinafter d A round punch el` punch stock (C). size to pu These punches are worked per punch and punch stock beingb j f by the cam (H)I uponythe shaftfG... This shaft turns in thel journal boxesf( j) and F has a spurwheel I, "on one end angular punchDf and roundffp F 1F operated by` he cams `(IJI and` (H2 shaft (J) whichjalsojhas afspur el on one end.` "In'zcase e round ch" dispensed with the camf1 pensed with, but the F F cams remain the` samel l `At the proper "poin between the F F j F F and lowerpunches IF place anutb "(L M).` FIt is made` in two `parts as`fFs`how Figs. FIV and V,`Fig`. V,F`showingit on scale and in a more perfect and form. i In the operation of the machinethe part L, is stationary andfsecuredftoltlle El (A) though it mayfberernoved and 1c F according to the size and shape Fofdth n to be made. FThFe'part,FM,`Fis` mova slides in grooves `the frame l j (A) operated bythe cam, `ltonthe;` turning in journal boxes on anfextensi F of the frame, `Aspur wheelQjo lone j end of the shaft,fP, gears .withspurF wheelF (I) on shaftF.(`G)`. F` The contiguous ends` 3 the two parts `of the nut box, Fare so formed that they F` F illfleave "an1 "opening, square, hexagon, `orfoctagon, in zsh j ac-i` cording tothe required shape and size ofthe nut to be made.,` FThe` drawingrepresen the opening as square, thefdiago l"ofF square being on the longitudinaljc of the nut box.F`cA rectangularHap` F lar e enough to` admit thebarof ironfrom` Fwhich the nuts areto be Inad5j" FOJTIDG@ IlQ if the part Lperpendicular tFo one ofthe sides ofthe opening, asshown bythe dottedlines V(2 and 3). Directly over this aperture placed a steel cutter (t) the` outer j j F .l which is parall l to, ;and"formsp`art" of, the side of the opening as shown"FinMFigJVI.

ycompleted its movement. By

`ever metal there 'may have vbeen left be- Vtween the punches, and allowing it to drop;

Below it the side of the opening is cut Iaway so as to allow it to project from the surface of the side of the opening and form a .cutting edge which will cut olf the rag-end of the bar. Motion being given to the driving wheel (R) it is communicated to the spur wheels, turning the several cams which op* erate the punches and nut boX by the pinion (S) which gears with the spur Wheels (K Q) the spur wheel (Q) as before stated gearing with spur wheel I. The bar Ais now fed to the punches, the motions of the various parts being so regulated that the cam (N) will first move the part M of the nut box until it comes in contact with the part, (L) when the angular punch (D) and central punch f by meansL of cams H and H2 commence their upward movement. But before the punch D rises high enough to come in contact with the bar which passes through the part into the opening formed by the nut box the part M will have thus timing Vthe movements, should the bar be fed in too far, the part M will bring it back to its proper place, when lthe upward motion of the angular punch, causes it, in connection with the steel cutter (t) to cut olf the nut blank from the bar. At vabout the same time the angular punch (D) commences its upward movement the cam (H) causes the punch 'e to commence its descent. After the nut blank is cut from the bar the round punch e will come in contact with the said nut blank and atthe saine time the cam HP will have raised the punch until it will l'be in contact with the nut blank directly under the punch Y e. Their motion being continued they will displace thel amount ofl metalV necessary to lform the hole in the nutl and force it into the body' of the nut,y and will meet each other (or nearly so)V near the center of the nut. At this movement; the cam (H2) will cease to act upon the punch 7 and the spring (g.) will cause said vpunch to drop down until its end comes lowV as the holes (u) in the lpunch stock (CV). |Ihe cam will still cause the punch (e) to descend until it has passed entirely through the'nut punching out what-lf out through the holes The cam (H)i will then cease to act uponthepunch stock (C) and the spring (V) will withdraw thef punch (e)M from thenut andraise punchI stock and punch as high as may be *de` sired. y At the same time the cam y(H) will cease to act upon the punch stock (C) and the spring (V) will cause the said stock to descend as much as may vbe`necessary. At :nearly the same time the cam (N) will cease to actupon the part (M). and the springs (V2) will cause it to move back, 'as far as may be necessary leaving the nut'fre'e to berem'oved by any proper means. During this operation the nut blank is held firmly by the nut box the angular punch (D) forming a table or bottom to resist4 the pressure of the punch (e).

In case the punch (f) is dispensed with as in practice it most probably will be, the motions of the other parts remain precisely the same-that is as soon as the angular punch has cut off the nut blank the punch (e) will come in contact vwith the nut blank` and punch the hole through it, the core dropping down through the angular punch and punch stock, the angularpunch as before stated resisting the pressure of the punch (e) in punching the hole. In this case the core is punched out, instead of being forced into the body of the nut. Y

The punch (e) Vis prevented from lifting the nut when it is beingV withdrawn by a bar of metal (4) secured to the part and covering theopening formed by the nut box, a hole being made through it, through which the punch works, but through which the nut can not pass. The tpunch (e) has an enlargement or shoulder, D, either round or angular which is countersunk to rform a'washer on the nut.

I prevent the punches from becoming hot, bythe use of water as follows. I conduct a stream of water through the pipe (fw) into the aperture (x) yin the punch e. One or two small openings (5, 6) aremade in the side of punch (e) as near the bottom as'possible to allow.v this water to escape and keep a constant current of water running through the punch thus keepingfthe punch cool. The angularpunch (D) has a cylindrical chamber (y) which, is filled with water from the Ipipe e. kWhen the punch f) isy used, several openings are'made into water thus keeping up a constant circula- Vtionof cool water through the unch.. As

the water issues into the holes u) it falls onto the head ofthe punch (f) after the said vpunch has ceased to be actedyupon'by the c am (H2) and has dropped vdown even with the said holes and keeps it coolor the punch maybe constructed as shown in Fig. IX :which shows the angular punch when constructed without ythe Vcentral punch (f). In this case the water issues into the from whence it flows through openings in the collar (7) into chamber 1(8) and out through the holes (9 and 10)thus keeping up a constant circulation of cool water through Acylindrical cavity (y) fromirthe pipe (e) the punch and 'keeping the punch cool.

rigs. v, vi, and -vii' thmugh'which a 'Constant streamof water will flow, being sup-V plied from the water in the recesses Zand m, in the nut box thus keeping the cutters per- A es.

fectly cool. The nut box (L M) is kept cool in a similar manner-recesses l and `m are made in the two parts which are kept full of water from the pipes (o, 39,) which conneet with the pipes (fw). The recesses be ing provided with vents to keep up the circulation of cold water. In this way I prevent the cutters nut box and punches from becoming heated.

For making hexagon nuts I place two heavy spur wheels (S and S2) gearing with each other on one side of the machine. Steel dies (T and T2) are bolted to these spur wheels. These dies are so formed that if the bar from which the nut is proposed to be made, be run in between these, when they are in motion they will form the bar into heXagon nut blanks connected together at opposite sides. I am thus enabled to save considerable metal and make a more solid nut, than when the form is given by cutting. In this case heXagon punches and nut box of (izhe required size and shape should be use. Having thus fully described my improved y nut machine, what Iclaim` therein as` new` and desire to secure by LettersPatent 1. Perforating the punch (6)I as fde scribed, for the purposesetforth.. i f 2. The cutters t, `and t', whenconstructed and arranged, relatively to thefdies L, and M, as hereindescribed. y 3. `The combinationof the dies L, and with the water-chambers Land m, when are` ranged and operating substantially; as ,des b scribed, for the purpose setforth.` 1

4. The combination and arrangementof y the punch D, Fig. IX, withthe water-chamf ber y, and openings 8, `9, substantiallyas," and for the purposedescribed." i

ANDREW J ."SHEPARD. -Witnessesz j A. M. WHEELER, W. H. FoRBUsH. 

